Street-sweeping machine.



PATENTED DEG. l0, 1907.

ZSHEETS-SHEET ly mll C. MALMQUIST.

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APPLICATION FILED MAY 17.1907.

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MX i 51 MM No. 873,569. PATENTED DEC. l0, 1907. C. MALMQUIST.

STREET SWEEPING MACHINE.

APPLIUATION FILED MAY 17.1907.

2 SHEETS-SHEET-2.

WITNESSES.' V [JY VEJVTR.' dag; 5MM @2M BYHLS Hama/Err CHARLES MALMQUIST, OF SIOUX CITY, IOWA.

STREET-SWEEPING- MACHINE.

Specification of Letters Patent.

Patented Dec. 10, 1907.

Application filed May 17.1907- Serial No. 374278- T 0 all whom it may concern.'

Be it known that I, CHARLES MALMQUisT, a citizen of the United States, residing at Sioux City, in the county of Woodbury and State of Iowa, have invented a new and useful Street-Sweeping Machine, of which the following is a specification.

My invention relates to improvements in street-cleaners; and has for its object the providing of an efficient, durable and practical machine of the class mentioned, by which the dirt will be gathered up and placed in heaps on the street for removal.

In the drawings, Figure 1 is a top or plan view of the complete machine. Fig. 2 is a sectional side elevation on line t b in Fig. 1. Fig. 3 is a sectional view on the line a. a in Fig. 1 with the brush and some other parts omitted. Fig. 4 is a sectional view on line c c in Fig. 1. Fig. 5 is a longitudinal vertical section of a ortion of the receptacle or box for the rubbish and dirt gathered up.

Referring to the drawing by reference numerals, 1 designates the main frame journaled on the axle and having its ends secured in the ground wheels 2 and 3 which thus serve as both supporting wheels and as traction wheels for the working parts.

5 is the draft pole and 6 the drivers seat.

7 is the receptacle for the sweepings or dirt that is gathered up. It is about of semicylindrical form and has its end walls journaled on the axle 4.

On a hanging bracket 8 v(best shown in Fig. 2) secured to the frame I pivot swinging braces 9, which are secured to a scraper or shovel 10. This scraper is in front on one side of the machine as seen in Fig. 1, and in making the first trip, and the last trip in the reverse direction, along the street this scraper follows the curbstone and scrapes up all the dirt in the gutter. Owing to the slant of the scraper the dirt is carried in front of the main working parts of the machine. When not in use the scraper may be raised to the position 10 by means of the rope or chain 11 passed over pulley 12 and operated by the catch lever 13 mounted on the rearpart of the frame near the drivers seat.

The operation of the main part of the device is as follows: Secured to the inner side o`r hub of wheel 3 is a combined sprocket and gear wheel 14. On the edge of this wheel are the teeth 15 and on the inner surface of said wheel are the gear teeth 16 (as best shown in Fig. 2), The latter are normally engaged by and the teeth of this engage the teeth 21 ofy the main working wheel 22, which will presently befully described. On the bracket 19 1s secured a toothed sector 23X, which engages the catch 23 of the lever 24 pivoted at 25. The short end of this lever fits loosely between the collar 26 of the shaft 13 and the pinion 20 so that when the lever 24 is pushed down to position 24 the shaft 18 and pinions 17 and 2O are both simultaneously brought out of engagement with the teeth 15 and 21. This mechanism puts the working parts at rest when the machine is driven idle. It will be seen that when the pinions 17 and 2O are in use the ground wheel 3 turns wheel 14 in the direction indicated by arrow and this wheel in turn causes the pinions 17 and 2O to turn and consequently the wheel 22 is turned by the pinion 20. On the inner side of Wheel 22 are pivotally secured shovels 27 at regular intervals. I have shown four shovels in the accompanying drawing but do not' wish to limit myself to any number of them. On the side of these shovels next to the wheel 22 are plates or guards 28 provided with slots 29 moving on studs 30 secured in wheel 22. When the shovels are in their-outer position (see Fig. 3) they scoo up all matter that is deposited in their pat by the scra er 10, or otherwise come in their path. hen each shovel has picked up some dirt it proceeds in its circular path upwardsy until 1t reaches an inverted position above the opening of the receptacle and gravity causes the dirt to fall into the receptacle.

In order to prevent the dirt from falling out of the shovels too soon, I provide them with high backs that are curved inwardly enough to hold the dirt until the shovel is over the receptacle. After the dirt has fallen out the shovels continue on their path downward and the above operation is repeatecl. In a groove in the periphery of the wheel 22 is a ring 31, having lateral arms 32 adapted when near the front ends of the shovels to hold them inward away from the ground when idle. To the band or ring is pivoted a catch 33 adapted to engage alternately in two notches 34 to hold the arms of the ring sufficiently far back to allow the shovels to reach the ground or clear of the ground when the machine is driven idle as already stated. A spring (not shown) is used to hold the catch in the folded or engaging position. In this manipulation it will be seen that the slots 29 allow the shovels to have a limited motion out and in to keep them in the desired position. lMounted on the main shaft 4 and extending from the wheel 22 and nearly across to the other side of the frame near wheel 2, is the semicylindrical receptacle 7. The position of this receptacle is best shown in Fig. 3, where it will be seen that the shovels pass under it very closely, which prevents the dirt from escaping between the receptacle and the shovels when the shovels are moving upward just before being emptied. In the end ofthe receptacle over which the shovels pass and deposit the dirt I have provided a slanting plate or guide 35 extending from the top to the bottom of the receptacle. The dotted lines 36 show the relative position of the shovels with the end of the receptacle and it can be seen that they pass so close to the end of the receptacle as to not allow any dirt to fall outside of it.

As best shown in Fig. 4, the mechanism used for dumping the dirt consists of a cogwheel 37 fixed at the end of the receptacle 7,

and a toothed sector 38 engaging the wheel.

and being fixed to an axle 40 journaled to the frame and provided with a lever 41, Whenever the operator wishes to empty the receptacle he pulls back lever 41 about as at 41X and the receptacle will become inverted and the contents of same are emptied out.

In doing this the sector will reach the position 38X and the receptacle is shown in dotted lines 7X.' 42 are pegs or projections on the sector to limit its motion and prevent its disengagement from the gear. When the contents of the receptacle are emptied out the lever is pushed back to its original position and receptacle will stay in the lowered position by its own weight.

In order to insure a well cleaned surface of the street I have provided. my machine with a revolving sweeper or brush 43 at its rear end. If any of the dirt is missed or dropped by the shovels the brush comes close behind them and brushes the dirt to one side and into the path of the next machine, or of the same machine on its next trip. The brush is of the variety now commonly used on street sweepers and is placed in -a slanting position to the frame of the machine. One end of the brush and shaft is hung in a slot 44 of a hanger 45 secured underneath the frame at its rear right hand corner. On this end of the axle of the brush is a bevel gear 46 which engages the teeth of a bevel gear 47 mounted on a hanger 48 secured to the frame. On the gear 47 is fixed a s rocket wheel 49 driven by the link-belt 50 fiom sprocket 14, so that when the machine is in motion the brush will revolve in the direction indicated by arrow in Fig. 2. The other end 5() of the' brush shaft is journaled in a vertical slot in a bracket 51, ofthe frame work.

The hanger 45 and bracket 51 have each a projection 52 in which are journaled equidistant from the brush-.shaft the ends of a rock-shaft 53, provided with a hand lever 54 having a catch 59 engaging a toothed sector 59a and controlled by a finger lever 59h. The shaft also has rocker arms 55 projecting horizontally and rearwardly over the brush. In slots 56 of said arms are engaged pins 57 secured to links 58 journaled on the shaft of the brush. VVAhen the lever 54 is thrown forward and held in any desired position on the toothed sector 59a it will be seen that the brush will be lifted out of engagement with gear 47 and also clear from the ground, and when it is thrown backward the brush will be in gear and ready for action.

It is evident that where so desired one or both of the supporting wheels may be loose on the axle.

Having thus described my invention, what I claim is 1. A street-sweeping machine comprising a yoke-shaped frame with draft-pole and a seat for the driver, an axle supporting the frame, supporting wheels on the ends of the axle, a receptacle pivotally supported on the axle, an inner wheel journaled on the axle between the receptacle and one of the supporting wheels, a series of shovels pivotally secured on the inner wheel and moving about a portion of the receptacle so as to take up dirt from the street and deposit it in the receptacle when they are inverted above it, a gear mechanism connecting the shovel-carrying wheel and the adj acent supporting wheel, and means for inverting the receptacle when it is to be emptied.

y 2. A street-sweeping machine comprising a yoke-shaped frame with draft-pole and a seat for the driver, an axle supporting the frame, supporting wheels on the ends of the axle, a receptacle pivotally supported on the axle, an inner wheel journaled on the axle between the receptacle and one of the supporting wheels, a series of shovels pivotally secured on the inner wheel and moving about a portion of the receptacle so as to take up dirt from the street and deposit it in the receptacle when they are inverted above it, a gear mechanism connecting the shovelcarrying wheel and the adjacent supporting wheel, and means for inverting the receptacle when it is to be emptied, and a rotary brush mounted in the rear of the frame work and operatively connected with the said gear mechanism.

3. A street-sweeping machine comprising a yoke-shaped frame with draft-pole and a seat for the driver, an axle supporting the frame, supporting wheels on the ends of the axle, a receptacle pivotally supported on the axle, an inner wheel journaled on the axle between the receptacle and one of the supporting wheels, a series of shovels pivotally secured on' the inner wheel and moving about a portion of the receptacle so as to take up dirt from the street and deposit it in the receptacle when they are inverted above it, a gear mechanism connecting the shovel-carrying wheel and the adjacent supporting wheel, means for inverting the receptacle when it is to be emptied, and a hand lever arranged to throw the supporting wheel out of gear with the wheel carrying the shovels.

4. A street-sweeping machine comprising a yoke-shaped frame with draft-pole and a seat for the driver, an axle supporting the frame, supporting ywheels on the ends of the axle, a receptacle pivotally supported on the axle, an inner wheel journaled on the axle between the receptacle and one of the supporting wheels, a series of shovels pivotally secured on the inner wheel and moving about a portion of the receptacle so as to take up dirt from the street and deposit it in the receptacle when they are inverted above it, a gear mechanism connecting the shovel carrying wheel and the adjacent supporting wheel, means for inverting the receptacle when it is to be emptied, and a hand lever arranged to throw the supporting wheel out of gear with the wheel carrying the shovels, said shovels having a limited swinging movement on their pivots, a ring carried by the shovel-carrying wheel and provided with arms engaging the shovels, and means for holding the ring turned in two different positionsv so as to j hold the shovels awayv from the street or allow them to descend to the street as majT be desired.

5. A street-sweeping machine comprising a yoke-shaped frame with draft-pole and a seat for the driver, an axle supporting the frame, supporting wheels on the ends of the axle, a receptacle pivotally supported on the axle, an inner wheel journaled on the axle between the receptacle and one of the supporting wheels, a series of shovels pivotally secured on the inner wheel and moving about a portion oi. the receptacle so as to take up dirt from the street and deposit it in the receptacle when they are inverted above it, a gear mechanism connecting the shovel-carrying wheel and the adjacent supporting wheel, means for inverting the receptacle when it is to be emptied, and a rotary brush mounted in the rear of the frame work rnd operatively connected with the said gear mechanism, and a hand lever for throwing the brush out of gear and raising it from the street.

6. A street-sweeping machine comprising a yoke-shaped frame with draft-pole and a seat forthe driver, an axle supporting the frame, supporting wheels on the ends of the axle, a receptacle pivotally supported on the axle, an inner Wheel journaled on the axle between the receptacle and one of the supporting wheels, a series of shovels pivotally secured on the inner wheel and moving about a portion of the receptacle so as to take up dirt from the street and deposit it in the receptacle when they are inverted above it, a gear mechanism connecting the shovel carrying wheel and the adjacent supporting wheel, means for inverting the receptacle when it is to be emptied, and a rotary brush mounted in the rear of the frame work and operatively connected with the said gear mechanism, and a hand lever for throwing the brush out of gear and raising it from the street, and a scoop or scraper pivotally secured to one of the front corners of the frame, a lever near the drivers seat and operative connection between the lever and the scoop to raise and lower it.

7. A street-sweeping machine comprising a yoke-shaped frame with draft-pole and a seat for the driver, an axle supporting the frame, supporting wheels on the-ends of the axle, a receptacle pivotally supported on the axle, an inner wheel journaled on the axle between the receptacle and one of the supporting wheels, a series of shovels pivotally secured on the inner wheel and moving about a portion of the receptacle so as to take up dirt from the street and deposit it in the receptacle when they are inverted above it, a gear mechanism connecting the shovel-carrying wheel and the adjacent supporting wheel, and means for inverting the receptacle when it is to be emptied, and a scoop or scraper pivotally secured to one of the front corners of the frame, a lever near the drivers seat and operative connection between the lever and the scoop to raise and lower it, said receptacle having the incline 35 for impelling the contents of the receptacle out of the path ofthe shovels. l

In testimony whereolc I aflix myjsignature, in presence of two witnesses.

CHARLES MALMQUISD Witnesses:

H. C. DAVIS, C. G. EPLEY. 

